.advertising {
    // background: #ccc;
    padding: 20px 30px;
    box-sizing: border-box;
    .header {
        .header-title {
            font-size: 24px;
        }
    }
    .ad_content{
        // max-width: 1200px;
        margin: 0 auto;
        margin-top: 50px;
        .ad_item{
            width: 24%;
            text-align: center;
            padding: 20px 40px;
            box-sizing: border-box;
            border-radius: 8px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            margin-bottom: 15px;
            margin-right: 15px;
            border: #ddd dotted 1px;
            position: relative;
            .ad_item_mask{
                background: rgba(0, 0, 0, 0.5);
                width: 100%;
                height: 100%;
                position: absolute;
                top: 0;
                left: 0;
                z-index: 999;
                color: #fff;
                font-size: 40px;
                i{
                    margin: 0 15px;
                }
            }
            img{
                width: 100%;
                height: 220px;
                margin: 10px 0;
            }
            video{
                width: 100%;
                height: 220px;
                margin: 10px 0;
            }
            span{

                font-size: 12px;
            }
            .mask{
                width: 100%;
                height: 100%;
                position: absolute;
                left: 0;
                top: 0;
                z-index: 99;
                // background: rgba(0, 0, 0, 0.5);
                img{
                    position: absolute;
                    width: 60px;
                    height: auto;
                    left: 0;
                    top: 0;
                    margin: 0;
                }
            }
        }
        .ad_item:hover{
            box-shadow:0px 5px 10px #333333;
        }
        .ad_item_add{
            width: 25%;
            height: 220px;
            text-align: center;
            justify-content: center;
            align-items: center;
            img{
                width: 110px;
                height: 110px;
                cursor: pointer;
            }
        }
    }
}